Child BMI Percentile Calculator

What a Child BMI Percentile Means

A BMI percentile tells you how a child's BMI compares with others of the same age and sex. A 70th percentile means the child's BMI is higher than about 70% of the reference group. Pair this with the Height Percentile Calculator and Baby Percentile Calculator for full growth tracking.

When to Use Height and Weight vs Direct BMI

Enter height and weight when you have measurements from a clinic or home scale. Enter BMI directly when a school or doctor report already gives the BMI value and you only need the percentile band.

Reading the Percentile Bands

Healthy pediatric BMI usually falls between the 5th and 85th percentiles. Crossing two or more percentile channels quickly may warrant a pediatric visit, even if the current value is still in a healthy range.